#18589: isogeny efficiency improvement
-------------------------+-------------------------------------------------
Reporter: | Owner:
cremona | Status: needs_review
Type: | Milestone: sage-6.8
enhancement | Resolution:
Priority: major | Merged in:
Component: | Reviewers:
elliptic curves | Work issues:
Keywords: | Commit:
isogeny | 47ccfd587402b953c612fcd3cddaa541a6847bd3
Authors: John | Stopgaps:
Cremona |
Report Upstream: N/A |
Branch: |
u/cremona/18589 |
Dependencies: |
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Comment (by jdemeyer):
Interesting, the hardest part of the computation is checking the
consistency, not computing the actual result.
I had a look at what PARI can do for isogenies: `ellisogeny` computes the
isogeny, so it could be used to implement `E.isogeny()`, but I assume it
does no checking.
Minor comment: in the doctest, you don't need
{{{
from sage.schemes.elliptic_curves.isogeny_small_degree import
isogenies_prime_degree_general
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/18589#comment:4>
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